Have a record player with RCA audio out (Red & white) and want to hook it up to my Samsung UN55F7500 smart tv to hear the music. When I try to do this using the AV2 channel, the TV says no signal. Further experimenting, if I hook the yellow RCA up from some other device that is outputting video then all of a sudden I can hear my record player music. This is not a real solution for me as it would require me to change all of my connections in the back every time I want to play music. Is there some other way to fool the tv into seeing the video input on the AV2 channel when there really isnt one or maybe some other way to hook this up?